Process for the formation and isolation of carotenoid crystals
CA 2487013 A1 · Owner: Quesnel, Yannick · Inventors: Quesnel, Yannick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of carotenoids crystals from a carotenoidcontaining plant oleoresin which process comprises (a) a first step of introducing the oleoresin to an organic solvent an alcohol and a base under , reflux temperature of the organic solvent to form a saponification reaction mixture; (b) maintaining said saponification reaction mixture for a period of time sufficient to complete the saponification reaction thereby producing a , saponified product; (c) allowing the resulting saponifiied product to separate into two phases comprising an organic phase and an aqueous phase; (d) separating said phases and extracting the extracting the aqueous phase; (e) distilling said …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.